I’m starting to get more into typeface design, and so I put together a little web app to generate PDF templates for sketching type out (with guides for the ascender, baseline, x-height, etc.). It’s called Typlate:

You twiddle with the numbers till you get proportions you like, then print out the PDF and start drawing:

Technical note: I’m using jsPDF to generate the PDF in-browser. In fact, there’s no server-side code at all. It’s amazing what you can do with JavaScript these days.